Apr 19, 2012

Slow CATiledLayer on New iPad 3 Retina display

Posted Apr 19, 2012
Noticed the poor performance of PDF rendering using CATiledLayer on the iPad 3. You can see the tiles loading one by one; it's terrible.

We tried increasing the tile size, we also tried the workaround found in Stackoverflow of setting the contentScaleFactor to no avail. Hope Apple release an update to address this issue. 


  1. hi,
    you have found a valid solution?

  2. Hi Stefano, we did apply the optimisations. But in the end it was not enough so we just overlayed images to each page so that user will always see something even if it's not in high quality.